Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from Vendor (redhat).
CVSS VectorVendor: redhat
Lifecycle Timeline
5DescriptionCVE.org
A flaw was found in the libxslt library. The same memory field, psvi, is used for both stylesheet and input data, which can lead to type confusion during XML transformations. This vulnerability allows an attacker to crash the application or corrupt memory. In some cases, it may lead to denial of service or unexpected behavior.
AnalysisAI
CVE-2025-7424 is a type confusion vulnerability in the libxslt library where the psvi (Post-Schema-Validation Infoset) memory field is reused for both stylesheet and input document processing, enabling memory corruption during XML transformations. This affects any application using vulnerable libxslt versions to process untrusted XML stylesheets or documents, allowing unauthenticated remote attackers to trigger denial of service or memory corruption without requiring user interaction. The vulnerability has a high CVSS score (7.5) with high availability impact, though real-world exploitation probability and active KEV status require confirmation from official sources.
Technical ContextAI
libxslt is a widely-used XSLT processing library that transforms XML documents using XSL stylesheets. The vulnerability stems from CWE-843 (Type Confusion), where the same memory field (psvi) intended for storing Post-Schema-Validation Infoset data is improperly reused across different contexts—both for stylesheet compilation/validation and input document processing. During XML transformations, this field confusion causes the processor to interpret stylesheet-related metadata as input document data or vice versa, leading to type mismatches in memory access patterns. Affected CPE strings typically include cpe:2.4:a:xmlsoft:libxslt (all versions with this vulnerability), commonly distributed with glibc-based Linux distributions, macOS via Homebrew, and embedded in web servers (Apache with mod_xslt), document processors (LibreOffice via its XSLT engine), and enterprise XML platforms.
RemediationAI
Immediate actions: (1) Identify all systems using libxslt via package managers (apt list --installed | grep xslt, rpm -qa | grep xslt, brew list | grep libxslt) or embedded in applications; (2) Apply vendor-provided patches immediately upon release—monitor xmlsoft.org and your OS vendor's security bulletins for patched libxslt versions; (3) If patches are unavailable, implement compensating controls: restrict XML/XSLT processing to trusted sources only, disable XSLT processing features if not required, run libxslt-dependent services in restricted containers/sandboxes with resource limits to minimize DoS impact. Longer-term: (4) Upgrade to patched libxslt versions once available (follow vendor release notes for specific version numbers); (5) Implement input validation and schema enforcement to reject malformed or suspicious XSLT stylesheets before processing; (6) Monitor for publicly disclosed POCs and adjust response priorities accordingly.
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View allVendor StatusVendor
Ubuntu
Priority: Medium| Release | Status | Version |
|---|---|---|
| bionic | released | 1.1.29-5ubuntu0.3+esm3 |
| focal | released | 1.1.34-4ubuntu0.20.04.3+esm2 |
| jammy | released | 1.1.34-4ubuntu0.22.04.5 |
| noble | released | 1.1.39-0exp1ubuntu0.24.04.3 |
| plucky | released | 1.1.39-0exp1ubuntu4.1 |
| trusty | released | 1.1.28-2ubuntu0.2+esm5 |
| xenial | released | 1.1.28-2.1ubuntu0.3+esm4 |
| upstream | released | 1.1.44,1.1.43-0.1 |
| questing | released | 1.1.43-0.3 |
Debian
Bug #1109123| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bullseye | fixed | 1.1.34-4+deb11u3 | - |
| bullseye (security) | fixed | 1.1.34-4+deb11u3 | - |
| bookworm, bookworm (security) | fixed | 1.1.35-1+deb12u3 | - |
| trixie (security), trixie | fixed | 1.1.35-1.2+deb13u2 | - |
| forky, sid | fixed | 1.1.43-0.3 | - |
| bookworm | fixed | 1.1.35-1+deb12u2 | - |
| trixie | fixed | 1.1.35-1.2+deb13u1 | - |
| (unstable) | fixed | 1.1.35-2 | - |
SUSE
Severity: High| Product | Status |
|---|---|
| Container suse/sl-micro/6.0/baremetal-os-container:2.1.3-6.73 Container suse/sl-micro/6.1/baremetal-os-container:2.2.0-3.1 | Affected |
| Container suse/sl-micro/6.0/base-os-container:latest Container suse/sl-micro/6.0/toolbox:latest | Affected |
| Image SL-Micro-Azure Image SL-Micro-BYOS-Azure Image SL-Micro-BYOS-EC2 Image SL-Micro-BYOS-GCE Image SL-Micro-Default Image SL-Micro-Default-SelfInstall Image SL-Micro-Default-encrypted Image SL-Micro-Default-qcow Image SL-Micro-EC2 Image SUSE-Multi-Linux-Manager-Proxy-BYOS-Azure Image SUSE-Multi-Linux-Manager-Proxy-BYOS-EC2 Image SUSE-Multi-Linux-Manager-Proxy-BYOS-GCE Image SUSE-Multi-Linux-Manager-Server-Azure-llc Image SUSE-Multi-Linux-Manager-Server-Azure-ltd Image SUSE-Multi-Linux-Manager-Server-BYOS-Azure Image SUSE-Multi-Linux-Manager-Server-BYOS-EC2 Image SUSE-Multi-Linux-Manager-Server-BYOS-GCE Image SUSE-Multi-Linux-Manager-Server-EC2-llc Image SUSE-Multi-Linux-Manager-Server-EC2-ltd | Affected |
| SUSE Linux Enterprise Server 16.0 | Fixed |
| SUSE Linux Micro 6.0 | Fixed |
| SUSE Linux Micro 6.1 | Fixed |
| openSUSE Tumbleweed | Fixed |
| SUSE Linux Enterprise Desktop 15 SP7 | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | Fixed |
| SUSE Linux Enterprise Micro 5.2 | Fixed |
| SUSE Linux Enterprise Micro 5.3 | Fixed |
| SUSE Linux Enterprise Micro 5.4 | Fixed |
| SUSE Linux Enterprise Micro 5.5 | Fixed |
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| SUSE Linux Enterprise Server 16.0 | Fixed |
| SUSE Linux Enterprise Server 16.1 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | Fixed |
| SUSE Linux Enterprise Server for SAP applications 16.0 | Fixed |
| SUSE Linux Enterprise Server for SAP applications 16.1 | Fixed |
| SUSE Linux Micro 6.0 | Fixed |
| SUSE Linux Micro 6.1 | Fixed |
| SUSE Linux Micro 6.2 | Fixed |
| openSUSE Leap 15.6 | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | Fixed |
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| SUSE Linux Enterprise Server 15 SP6 | Fixed |
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| SUSE CaaS Platform 4.0 | Fixed |
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| SUSE Enterprise Storage 7.1 | Fixed |
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| SUSE Linux Enterprise Desktop 11 SP3 | Fixed |
| SUSE Linux Enterprise Desktop 11 SP4 | Fixed |
| SUSE Linux Enterprise Desktop 12 | Fixed |
| SUSE Linux Enterprise Desktop 12 SP1 | Fixed |
| SUSE Linux Enterprise Desktop 12 SP2 | Fixed |
| SUSE Linux Enterprise Desktop 12 SP3 | Fixed |
| SUSE Linux Enterprise Desktop 12 SP4 | Fixed |
| SUSE Linux Enterprise Desktop 15 | Fixed |
| SUSE Linux Enterprise Desktop 15 SP1 | Fixed |
| SUSE Linux Enterprise Desktop 15 SP2 | Fixed |
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| SUSE Linux Enterprise Desktop 15 SP5 | Fixed |
| SUSE Linux Enterprise Desktop 15 SP6 | Fixed |
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| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | Fixed |
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| SUSE Linux Enterprise High Performance Computing 15 SP2 | Fixed |
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| SUSE Linux Enterprise Module for Basesystem 15 SP2 | Fixed |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | Fixed |
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| SUSE Linux Enterprise Server 15 SP2 | Fixed |
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| SUSE Linux Enterprise Server 15 SP3-LTSS | Fixed |
| SUSE Linux Enterprise Server 15-LTSS | Fixed |
| SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 11 SP2 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 11 SP3 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 11 SP4 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 12 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 12 SP1 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | Fixed |
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| SUSE Linux Enterprise Software Development Kit 11 SP3 | Fixed |
| SUSE Linux Enterprise Software Development Kit 11 SP4 | Fixed |
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| SUSE Linux Enterprise Software Development Kit 12 SP2 | Fixed |
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| SUSE Linux Enterprise Software Development Kit 12 SP4 | Fixed |
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| openSUSE Leap Micro 5.4 | Fixed |
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External POC / Exploit Code
Leaving vuln.today
EUVD-2025-20995